Chapter 2
The interval between the fourth harmonic (4X) and the fifth harmonic (5X) gives the major third interval.
The interval covers three white positions of the C major scale.
Four semitones span the notes of a major third interval.
The frequency ratio of the major third is 5X/4X= 5:4.
This is a significant and popular interval in music. It is the first interval of a major triad chord and the second interval of a minor triad chord (we cover triad chords later).
Later, when we exam chords, we will provide a simple and intuitive method to identify a major third interval immediately
The interval covers three white positions of the C major scale.
Four semitones span the notes of a major third interval.